Shaft-coupling.



N0. 802,269. PATENTED OCT. 17. 1905 I F. J. C UE.

SHAFT C LING.

APPLICATION TILED FBB.23,1905.

llvl EN Tole FRANK J. CREQUE, OF UUYAHOGA FALLS, OHIO.

SHAFT-COUPLING.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed February 23, 1905. Serial No. 246,951.

To a, who/it it may conceive.-

Be it known that l, FRANK J. GRE UE, a citizen of the United States,residing at Guyahoga Falls, in the county of Summit, State of Ohio. haveinvented certain new and useful Improvements in Shaft-Couplings, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to a shaft-coupling, and particularly to astructure of that character embodying keys and compression-diskstherefor.

The invention has for an object to provide an improved construction ofspacing-ring adapted to receive and support the keys in connection withthe compression-disks tapered to fit the inclined faces of said keys andalso that of the spacing-ring.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims. I

in the drawings, Figure 1 is a central longitudinal section showing theinvention applied to adjacent shafts; Fi 2, a vertical section on theline 2 2 of big. 1; Fig, 3, a detail perspective View of a spacing-ring;Fig. 4:, a similar view of one of the keys; Fig. 5,,a perspective viewof the keys and rings assembled, and Fig. 6 a vertical longitudinalsection of a modified application of the invention.

Like letters of reference refer to like parts in the several figures ofthe drawings.

The letter A designates the shafts to be coupled together, which may beof any desired character or size. For the purpose of bridging the jointbetween the two shafts and coupling them together a series of keys B areprovided, each being preferably inclined in opposite directions upon itsupper surface, as shown at B, and suitably curved upon its undersurface, as indicated at B A series of these keys is arrangedsurrounding the shafts and spaced at proper distances from each otherand supported in such position for application to the shafts by means ofthe rings 0, one of which is disposed at each end of the keys, and theouter face thereof is suitably beveled or inclined, as at C, tocorrespond with the inclination or beveled surface B of the key. Each ofthese rings is also provided with a series of sockets 0, adapted toclosely fit the ends of the keys and thus hold them therein byfrictional contact, whereby both the keys and rings grip the shaftsimultaneously when compressed, as hereinafter described. These ringsare cut or split, as shown at C, in order to permit the proper expansionthereof to it shafts of different sizes and also the compression intocontact with the shaft when the compression-disk .l) is applied. Thesedisks may be of any desired configuration and drawn toward each other byany preferred means. For instance, in Fig. 1 the inner periphery of thedisk is provided with an inclined surface 1), corresponding to that ofthe keys and rings, so as to fit snugly thereon. The disks in thisinstance are drawn together by means of bolts D havingoppositely-threaded ends 1) threaded into bosses 1)", carried by thedisk. Each of the disks is also provided with an inturned flange D topermit space for the operation of a wrench while protecting theadjusting-bolts from contact or injury in the high speed of rotation ofthe shaft.

In Fig. 6 a modified application of the in vention is illustrated, andit is particularly adapted for cases where the shafts bear heavy loadsand greater compression is necessary. The keys B and rings 0,hereinbefore described, are similar in construction, arran ement, andoperation; but instead of two disks 1) a series thereof is used, asshown at I), each being provided with an interlocking pro jection D, asshown in Fig. 6, by which the compression-bolts E therein used arerelieved from lateral strain. As herein shown, the disks D are providedwith inclined surfaces upon their inner periphery and with an aperturedflange D upon their outer periphery, through which the compressionboltsE extend. At the opposite end of each series of these disks D is a diskD, also having an inclined inner periphery and apertured flange 1 toreceive the opposite ends of the bolts E. A guard-flange D extends fromeach flange and protects the end nuts E upon the threaded bolts. Theparts may be properly adjusted under tension by means of the nuts E,disposed on the bolt. one of which is turned into contact with theflange of the disk as the other is moved away therefrom until thenecessary movement of the disk is accomplished, when both nuts arebrought into contact therewith to lock it in the usual manner.

In the operation of the invention the keys are assembled in serieswithin the spacingrings, as shown in Fig. 5, when these parts areinserted upon the adjacent ends of the shafts to be coupled and thecompression- IIO disks applied.

sitely-inclined faces of the keys, thus forcing the same simultaneouslyinward toward a common center at the axis of the shaft and securing themost desirable compression and holding action. The inclined faces of therings cause the same to be compressed into clamping contact with theshafts simultaneously with the keys. thus securing a holding action fromboth members, while the compression of the rings permits the propermovement of the disks thereon.

This coupling prevents the necessity of cutting the shafts or formingfaces thereon, and the parts may be formed of any desired material,although it is preferable to provide the keys of steel and thespacing-rings of castiron. The stud-bolt construction for operating thecompression-disks, as shown in Fig. 1, provides a single member forsimultaneously operating the adjacent disks and for forming a rigidconnection between the disks to permit the proper transmittal of motionfrom one to the other.

Having described my invention and set forth its merits, what I claim,and desire to secure by Letters Patent, is

1. A shaft coupling comprising spacer rings having sockets in theirinner ends, keys seated at their opposite ends therein,compression-disks engaging said keys, and means for moving said diskstoward each other.

2. A shaft-coupling comprising compressible spacer-rings having socketsin their inner ends, keys frictionally held at their opposite endstherein, compression-disks engaging said keys, and means for moving saiddisks toward each other.

3. A shaft-coupling comprising spacerrings having sockets in their innerends, ke'ys seated at their opposite ends therein, compression-disksengaging said keys, bolts having oppositely-threaded ends engaging saiddisks, there being guard-flanges upon said disks to protect said bolts.

' 4. In a shaft-coupling, spacer-rings pro-- vided with sockets, aseries of oppositely-in- As these disks are drawn to l gether theytravel in contact with the oppo- I clined keys disposed in said sockets,compression-disks independent of said rings and having inclined faces toengage said keys, and means for moving said disks toward each other.

5. In a shaft-coupling, spacer-rings provided with sockets, a series ofoppositely-inclined keys disposed in said sockets, compression-diskshaving inclined faces to engage said keys, means for moving said diskstoward each other, there being inclined faces upon said rings to fit theinclination of said disks.

6. In a shaft-coupling, a spacer-ring comprising an annular compressiblebody having in one end a series of elongated sockets, and means forcompressing said ring upon a shaft.

7. In a shaft-coupling, spacer-rings having sockets in their inner ends,inclined keys seated therein at opposite ends, compressiondisks movableupon said keys and provided with interlocking portions, and means formoving said disks toward each other.

8. In a shaft-coupling, compressible spacerrings provided upon theirinner faces with a series of sockets and having inclined peripheries, aseries of keys having oppositely-in clined outer faces and seated attheir opposite ends in said sockets, compression-disks havingoppositely-inclined inner faces to engage the inclination of the ringsand keys, and means for moving said disks toward each other.

9. In a shaft-coupling, a spacer-ring comprising a compressible cut ringhaving in one end a series of circumferentially-disposed sockets.

10. In a shaft-coupling, annular slotted spacing-rings provided withsockets upon their inner ends, a series of keys seated at their oppositeends in said sockets, and means for compressing said rings.

In testimony whereof I. aiiix my signature in presence of two witnesses.

FRANK J. CREQUE.

\Vitnesses:

RALPH R. MooRE, HAROLD T. HEATH.

